chore(deps): bump guzzlehttp/psr7 in /clients/algoliasearch-client-php

Bumps [guzzlehttp/psr7](https://github.com/guzzle/psr7) from 2.8.0 to 2.12.1.
- [Release notes](https://github.com/guzzle/psr7/releases)
- [Changelog](https://github.com/guzzle/psr7/blob/2.12/CHANGELOG.md)
- [Commits](guzzle/psr7@2.8.0...2.12.1)

---
updated-dependencies:
- dependency-name: guzzlehttp/psr7
  dependency-version: 2.12.1
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]